Preston W Glassboro , NJ February 12, 2022 Appliance: Samsung Gas Range NX58K9850SS/AA-00 Samsung Range Nx58k9850ss/Aa-00: After the customer used the self cleaning function it damaged a thermistor on the main pcb with a c 31 error code. How to replace Range Control Board Assembly. Replacing the main PCB solved the problem. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes